What is a N95 Face Mask?

N-series respirators provide protection against liquid and solid particulates, but not oil. The National Institute for Occupational Safety and Health, a research division of the Center for Disease Control and Prevention, has regulated and classified them. N classification is based on filtration efficiency and can be broken down into three levels: 95% (N95), 99.7% (N99) or 99.7% (N100). NIOSH's filtration efficiency certification tests are based on small particulate testing, with a particle size of 0.3 micron.

The N95 is the most popular n-series face mask. The N95 face mask is tested and made for tight fit. The N95 mask can filter out viruses and bacteria from the air and is commonly used by healthcare providers. 

The N95 mask removes 95% of particles larger than 0.3 microns from the air. It is worn behind the mask. NIOSH-approved N95 masks that are properly fitted provide tight facial fits, eliminating excess air leakage. The special fiber layers allow air to flow through the mask edges and not through open air gaps. N95 masks have flat fibrous layers made from fibrous fibers that filter particles through interception, inertial imposition, diffusion and electrostatic attraction.


Captures larger particles that touch fibers during mask layer penetration.
Inertial impaction is the accumulation of larger particles. These particles are too big to pass through the fibers unencumbered.
Diffusion: Small particles are collected from the air and inhaled into the mask layers. The maze-like layers of fibers are a maze, so small particulates must navigate through them. They will encounter competing air molecules, currents and other particulates, which can redirect or stop the particles from moving. There are many obstacles in the space between the outermost layer and the innermost layers of N95 mask. Particles do not have a clear path to the mouth or nose. They get stuck on fibers and other molecules.
Electrostatic attraction: Particles and filter fibers both have molecular structures. Coulomb's law, and dielectrophoretic show that particles entering the N95 mask are pulled and pushed constantly by charged filter fibers as well as the particle's molecular charge. This causes particles to bond with the filter fibers, and stop short of the user's nose or mouth. Filter fiber layers N95 have electrostatic forces which act as a barrier against particles. They interact with the particles' electric charge.

Although the CDC does not require the general public to wear N95 face masks, more people are wearing them in public. Manufacturers who used to supply the medical industry are now facing a shortage in N95 face masks. The majority of N95 face mask makers are now supplying the public around the world, leading to massive shortages.

Is it possible to buy N95 respirators online?

Accumed.com has face masks at K N95 level, which is becoming increasingly difficult to find due to the ongoing coronavirus pandemic. USA Today reports that N95 face respirators are essential for health care workers and they're becoming more scarce. Sometimes, businesses are out of stock or price gouging to meet current demand.

Accumed.com sells K N95 Respirator Masks that are very effective in filtering out harmful substances. All of our KN95 mask are available for purchase (while stocks last) and shipped to customers all over the country. Accumed.com offers a wide range of medical supplies that can be used at home or for medical purposes. Accumed.com offers the opportunity to save money on top-selling KN95 face masks. You can order in bulk from our online store and get your products quickly with expedited shipping.